Safety device for locomotives



A. R. PEER.

SAFETY DEVICE FOR LOCOMOTIVES.

APPLICATION FILED MAR. 14. mm.

1,322,609. Patented Nov. 25,1919.

H 2 S EET$Sl-1EET N R Mm a e 1 Inlan- Q Q N N N N 4 v I a /N j iii)! @lG/Ak I nmwtoz i A. 6.2 661 rj\ Mbzauer v aum A. R. PEER.

SAFETY DEVICE FOR L'ocamonvss.

APPLICATION FILED MAR. 14, I919.

1,322,609. Patented Nov. 25,1919.

2 SHEIIT$SHEET Z.

ODD

wuewtoz IE. Peer ARTHUR EOSCOE'PEER, O'F IBERKELEY' SPRINGS, WE$T VIRGINIA.

SAFETY DEVICE FOR LOCOMOTIVES.

Specification of Letters Patent.

Patented Nov. 25, 1919.

Application filed Maren 14,,1919Q Serial K032825712.

To all whom it may concern:

Be it known that I, ART UR Rosoon PEER, a citizen of the United States, residing at Berkeley Springs, in, the county of Mor' gan and State of Vest Virginia, have invented new and useful Improvements in Safety Devices for Locomotives,'of which the following is a specification.

. This invention relates to train controlling devices and has for an object the provision of means controlled by a semaphore or track signal for closing the throttle valve of an engine and operating the engineers brake valve to shut off the steam supply and apply the brakes of the train, in the event of the engineer disregarding the danger signal.

To this end the invention contemplates the provisionof a train carried motor operated mechanism, which is included in a normally open circuit, in which is also included a switch controlled by the position of the semaphore signal, track contacts and train carried contacts being also included in the circuit, which is closed by the train when the signal is set out danger, whereby the motor will be operated to close thethrottle valve and open the air line of the train.

The invention also contemplates the'provision of a novel motor operated mechanism, which will unlock or release the throttle lever and engage the latter to close the same, the said mechanism also including means for operating the engineers" brake valve, the throttle lever operating means further operating to interrupt the motor circuit when the-lever has reached a closed position.

Other novel features of the invention will appear as the followingdescription is read in connection with the accompanying drawings, in which;

Figure 1 is an elevation showing" the gen eral' arrangement of the invention.

Fig. 2 is a plan view of the subject matter of Fig. 1.

Fig. 8-is a detail transverse sectional view taken through :one of the track rails and through the contact rail carried thereby. Fig. 4 is aside elevation of Fig. 3.

. F igQ 5 is a fragmentary sectional view through the upper portion of the cab of the locomotive and illustrating the mechanism for operating the throttle lever and the engi-- neers brake valve.

Fig.6 is anend view of Fig. 5. F1g. 7 1s a view taken transversely of the track showingthe signal supporting bridge,

the switch controlled by the signal and also showing diagrammatically that portion of the circuit connecting the contact rails and the switch.

F ig. 8 is a view similar to Fig. 6 ona slightly enlarged scale, showing the throttle lever in the position occupied after the operation of the device.

Referring in detail to the drawings,

are indicated f at 10, the signal "bridge or tower at 11,'the semaphore or signal arm at 12 and the locomotive at 13.

The device incluudes a track mechanism the former including a .pair of contact rails 1.4, which are arranged longitudinally upon each side of the track rails and are included in a normally open circuit. This circuit comprises a conductor 15, which connects one of the contact rails 1a with a suitable source of electric energy herein shown as battery 16. Thebattery is in turn connected through the medium of a conductor 17, with a movable member 18 of a switch. This member is 'in the {formof a contact mounted upon andmo'vable with the semaphore or signal arm 12, and whenh'the latter is 'indanger position,

thereof in a manner to engage the contact rails, while located in advance of the contacts 21-, are brushes or scrapers-22, their Iwherei'n like characters of reference denote corresponding parts,'the ralls of the track willcausethe dog 34 to release the latch 31 purpose being to clean the contact surface of the rails 14:, so that proper contact w1ll be made between the said rails and the spring contacts 21.: The contacts 21 are connected 7 to the opposite terminals of a motor 23 through the medium of conductors 24:v and 25, so that should the semaphoreor signal arml2 beset at CIQJIgQIQthQtIaHI apa proaching the signal will have its contacts 21 engage with thecontact'rails 14,:complet5.

ing the motor circuit and operating the motorg Secured upon the shaft of the motor pinion 26, which engages and operates a gear 27, secured upon a shaft 28, mounted in suitable bearings 29, "depending preferably from the roof of the locomotive cab;

A throttle lever by means of whlchthe throttle valve (not shown) of the engine is controlled, is indicated at 30, thefsaidlever being loosely mounted upon the shaft 28 and carrying a spring latch 31, for engagement with suitable notches formed in a 's'eg ment 32', located adjacent one end of the shaft-. 28. Rigidly mounted upon the end ofthe shaft '28, is an arm 33, and pivotally mounted upon this arm is a dog3L, one end of which is provided with a shoulder 35, for engagement with the spring latch 31 of the throttle lever, so that rotation of the shaft 28, through the medium of the motor 23,

' from the segment 32, when thejarm 33 is 1'0- tated. Afurther rotation 'of the arm will cause the. laterally disposed extension 36,;

with which it is provided, to engage the throttle lever 30 and to swingthesaid lever in a manner to close the throttle'valve and cut off the supply of steam, as will be readily apparent. v

Rigidly mounted upon the shaft 28, is. an

arm 37, and when the shaft 28 is rotated,

this arm is adapted to contact with a handle 39 of an engineers brake valve 40, so that simultaneous with the operation of the throttle valve, to cut off the steam supply, the brakes will be operated to stop the train.

: Forthe purposeof stopping the operation V of the motor 23, after the train has beenbrought to a standstill, there is. included in the conductor 24, a circuit breaker. This circuit breaker is in the form of a pair of spring arms 41 and 42, which when in contact will provide for a continuous flow of current through the conductor24, but which when'separated Will interrupt the flow of current andxstop the operation of the motor.

Forthis purpose,th'e contact 4C2'is provided with a lateral extension 43, located in the pathof movement of the arm 33, adapted to be engagedby the said arm afterthe throttle g lever 30 has been moved to a closed position. Through this engagement, the contacts" 41 .rent interrupted.

and 42 will be separatedand the flow of our It is believed that'when theforegoing description is read in connection withthe accompanying drawings, the construction, op,- eration and advantagesof the 'mventlon will be apparent. The inventionis susceptible right is herein reserved to make such changes as properly fall within thescope of the appended claims. 7 V 4;

Havingdescribed the invention, what is claimedisr 1 1. In an automatic train control, thecombination with asignalarm,fof*a normally open circuit, a source of electric supply, a switch included in said circuit andcontrolled .70 p v r s. changes sz o m, p p r o and humor detalls'of construction andJthef by the signal arm, contact rails also included in said'circuit, train carriedcontactsadapted to engage the contact rails, amotor included in thecircuit, means operated by the motor and connected to the throttle lever andengageable with the engineers brake 7 valve'to close the throttle and operate the valve upon completion of the circuit and means actuated by the" throttle operated means and including contacting spring arms connected in the motorcircuitfor interruptjdog operated by the motor, athrottle actuatedarm also operated by the motor and 0011- trolling the operation of the release dog for closlng the throttle and means for interruptmg the circuit after the closing of the throttle valve.

3. In an automatic train control,'the com- I bination with a signal arm, of a normally open c rcuit, a source of electric supply,a switch included-in said circuitalnd controlled by the signal arm, contact rails also included in said circuit, train ed to engage the contact rails,-a motorineluded in'the circuit, a throttlelever release dog operatedbythe-motor, a throttle actuatcarried contacts adapt ed arm also operated by the leverand ,con-

trolling the release of the dog for closing-the throttle and means controlled by the throttle actuated arm' for interruptingthe' circuit after the closing of the throttle valve." U V 4. In an automatic train control, the'combination with; a-signal arm, of a normally open circuit, a source ofielectric supply, a

switch included in said circu-it and controlled by the signal arm, contact rails also included in said circuit, train carried contacts adapted to engage the contact rails, a motor included in the circuit, a throttle lever release dog operated by the motor, a throttle actuated arm also operated by the motor and. controlling the operation of the release dog for closing the throttle and a spring contact arm controlled by the throttle actuated arm for interrupting the circuit after the closing 10 of the throttle valve.

In testimony whereof I aflix my signature.

ARTHUR ROSCOE PEER. 

